From f4c4803ce0c14585e3c2af3641d94b651877e04c Mon Sep 17 00:00:00 2001
From: jsdelfino <jsdelfino@13f79535-47bb-0310-9956-ffa450edef68>
Date: Mon, 30 Jan 2012 15:56:11 +0000
Subject: Refactor server hosting module, rename it and move it under a hosting
 dir, and refactor its datastore components into a single component.

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1237740 13f79535-47bb-0310-9956-ffa450edef68
---
 sca-cpp/trunk/hosting/server/util.py | 164 +++++++++++++++++++++++++++++++++++
 1 file changed, 164 insertions(+)
 create mode 100644 sca-cpp/trunk/hosting/server/util.py

(limited to 'sca-cpp/trunk/hosting/server/util.py')

diff --git a/sca-cpp/trunk/hosting/server/util.py b/sca-cpp/trunk/hosting/server/util.py
new file mode 100644
index 0000000000..24467fd2cb
--- /dev/null
+++ b/sca-cpp/trunk/hosting/server/util.py
@@ -0,0 +1,164 @@
+#  Licensed to the Apache Software Foundation (ASF) under one
+#  or more contributor license agreements.  See the NOTICE file
+#  distributed with this work for additional information
+#  regarding copyright ownership.  The ASF licenses this file
+#  to you under the Apache License, Version 2.0 (the
+#  "License"); you may not use this file except in compliance
+#  with the License.  You may obtain a copy of the License at
+#  
+#    http://www.apache.org/licenses/LICENSE-2.0
+#    
+#  Unless required by applicable law or agreed to in writing,
+#  software distributed under the License is distributed on an
+#  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+#  KIND, either express or implied.  See the License for the
+#  specific language governing permissions and limitations
+#  under the License.
+
+# Simple utility functions
+from sys import maxint
+
+# Scheme-like lists
+def cons(a, b):
+    return (a,) + b
+
+def car(l):
+    return l[0]
+
+def first(l):
+    return car(l)
+    
+def cdr(l):
+    return l[1:]
+
+def rest(l):
+    return cdr(l)
+
+def cadr(l):
+    return car(cdr(l))
+
+def cddr(l):
+    return cdr(cdr(l))
+
+def caddr(l):
+    return car(cddr(l))
+
+def cdddr(l):
+    return cdr(cdr(cdr(l)))
+
+def cadddr(l):
+    return car(cdddr(l))
+
+def append(a, b):
+    return a + b
+
+def reverse(l):
+    r = list(l)
+    r.reverse()
+    return tuple(r)
+
+def isNil(l):
+    if isinstance(l, streampair):
+        return l.isNil()
+    return l == ()
+
+def isSymbol(v):
+    return isinstance(v, basestring) and v[0:1] == "'"
+
+def isString(v):
+    return isinstance(v, basestring) and v[0:1] != "'"
+
+def isList(v):
+    if getattr(v, '__iter__', False) == False:
+        return False
+    if isinstance(v, basestring) or isinstance(v, dict):
+        return False
+    return True
+
+def isTaggedList(v, t):
+    return isList(v) and not isNil(v) and car(v) == t
+
+
+# Scheme-like streams
+class streampair(object):
+    def __init__(self, car, cdr):
+        self.car = car
+        self.cdr = cdr
+
+    def __repr__(self):
+        return repr(self[0:len(self)])
+
+    def isNil(self):
+        return self.cdr == ()
+
+    def __len__(self):
+        if self.cdr == ():
+            return 0
+        return 1 + len(self.cdr())
+
+    def __getitem__(self, i):
+        if i == 0:
+            return self.car
+        return self.cdr()[i - 1]
+
+    def __getslice__(self, i, j):
+        if isNil(self):
+            return ()
+        if i > 0:
+            if j == maxint:
+                return self.cdr()[i - 1: j]
+            return self.cdr()[i - 1: j - 1]
+        if j == maxint:
+            return self
+        if j == 0:
+            return (self.car,)
+        return (self.car,) + self.cdr()[: j - 1]
+
+    def __eq__(self, other):
+        sl = len(self)
+        ol = len(other)
+        if sl != ol:
+            return False
+        return self[0: sl] == other[0: ol]
+
+    def __ne__(self, other):
+        return not self.__eq__(other)
+
+def cons_stream(car, cdr):
+    return streampair(car, cdr)
+
+
+# Scheme-like associations
+def assoc(k, l):
+    if l == ():
+        return None
+
+    if k == car(car(l)):
+        return car(l)
+    return assoc(k, cdr(l))
+
+# Currying / partial function application
+def curry(f, *args):
+    return lambda *a: f(*(args + a))
+
+# Convert a path represented as a list of values to a string
+def path(p):
+    if isNil(p):
+        return ""
+    return "/" + car(p) + path(cdr(p))
+
+# Split a path into a list of segments
+def tokens(path):
+    return tuple(filter(lambda s: len(s) != 0, path.split("/")))
+
+# Return true if s1 contains s2
+def contains(s1, s2):
+    return s1.find(s2) != -1
+
+# Write a list of strings to a stream
+def writeStrings(l, os):
+    if l == ():
+        return os
+    os.write(car(l))
+    return writeStrings(cdr(l), os)
+
-- 
cgit v1.2.3